Water bottle top cover



FIG. 1 is a side elevation view of a water bottle top cover, showing my new design, the broken lines showing of a water bottle is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a side elevational view showing a different position of use, the broken lines showing of a water bottle is for illustrative purposes only and forms no part of the claimed design;

FIG. 3 is a left side elevation thereof, the right side is a mirror image;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a water bottle top cover, as shown and described. 